"As an Administrative Manager over 5 companies, 2 of which are manufacturing, I spend a lot of my time behind the desk working at my computer. I started using the peddler 6 months ago with great success in regard to behind the knee cramping. My problem use to be, while I was typing I would move my left leg under my chair and cut off circulation causing me to stop and massage the cramping. Now with my feet in contact on the peddler my leg never moves off without reminding me to rock a few times while I keep on working. Thanks Peddler."